USN-6838-1: Ruby vulnerabilities

Releases

• Ubuntu 24.04 LTS
• Ubuntu 23.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Packages

• ruby2.7 - Object-oriented scripting language
• ruby3.0 - Object-oriented scripting language
• ruby3.1 - Object-oriented scripting language
• ruby3.2 - Object-oriented scripting language

Details

It was discovered that Ruby RDoc incorrectly parsed certain YAML files. If
a user or automated system were tricked into parsing a specially crafted
.rdoc_options file, a remote attacker could possibly use this issue to
execute arbitrary code. (CVE-2024-27281)

It was discovered that the Ruby regex compiler incorrectly handled certain
memory operations. A remote attacker could possibly use this issue to
obtain sensitive memory contents. (CVE-2024-27282)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 24.04

• libruby3.2 - 3.2.3-1ubuntu0.24.04.1
• ruby3.2 - 3.2.3-1ubuntu0.24.04.1

Ubuntu 23.10

• libruby3.1 - 3.1.2-7ubuntu3.2
• ruby3.1 - 3.1.2-7ubuntu3.2

Ubuntu 22.04

• libruby3.0 - 3.0.2-7ubuntu2.6
• ruby3.0 - 3.0.2-7ubuntu2.6

Ubuntu 20.04

• libruby2.7 - 2.7.0-5ubuntu1.13
• ruby2.7 - 2.7.0-5ubuntu1.13

In general, a standard system update will make all the necessary changes.

References

• CVE-2024-27282
• CVE-2024-27281